163320247 has 2 divisors, whose sum is σ = 163320248. Its totient is φ = 163320246.

The previous prime is 163320233. The next prime is 163320271. The reversal of 163320247 is 742023361.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 163320247 - 2¹⁹ = 162795959 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163320847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81660123 + 81660124.

It is an arithmetic number, because the mean of its divisors is an integer number (81660124).

Almost surely, 2^163320247 is an apocalyptic number.

163320247 is a deficient number, since it is larger than the sum of its proper divisors (1).

163320247 is an equidigital number, since it uses as much as digits as its factorization.

163320247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 28.

The square root of 163320247 is about 12779.6810210584. The cubic root of 163320247 is about 546.6130668662.

The spelling of 163320247 in words is "one hundred sixty-three million, three hundred twenty thousand, two hundred forty-seven".